<s>
CPN-AMI	B-Application
is	O
a	O
computer-aided	B-Application
software	I-Application
engineering	I-Application
environment	O
based	O
on	O
Petri	B-Operating_System
Net	I-Operating_System
specifications	O
.	O
</s>
<s>
It	O
provides	O
the	O
ability	O
to	O
specify	O
the	O
behavior	O
of	O
a	O
distributed	B-Architecture
system	I-Architecture
—	O
and	O
to	O
evaluate	O
properties	O
such	O
as	O
invariants	O
(	O
preservation	O
of	O
resources	O
)	O
,	O
absence	O
of	O
deadlocks	B-Operating_System
,	O
liveness	O
,	O
or	O
temporal	O
logic	O
properties	O
(	O
relations	O
between	O
events	O
in	O
the	O
system	O
)	O
.	O
</s>
<s>
CPN-AMI	B-Application
relies	O
on	O
AMI-Nets	O
,	O
that	O
are	O
well-formed	B-General_Concept
Petri	I-General_Concept
nets	I-General_Concept
with	O
syntactic	O
facilities	O
.	O
</s>
<s>
Well	O
Formed	O
Petri	B-Operating_System
nets	I-Operating_System
were	O
jointly	O
elaborated	O
between	O
the	O
University	O
of	O
Paris	O
6	O
(	O
Université	O
P	O
.	O
&	O
M	O
.	O
Curie	O
)	O
and	O
the	O
University	O
of	O
Torino	O
in	O
the	O
early	O
1990s	O
.	O
</s>
<s>
This	O
Petri	B-Operating_System
net	I-Operating_System
class	O
supports	O
symbolic	O
techniques	O
for	O
model	B-Application
checking	I-Application
,	O
and	O
thus	O
provides	O
a	O
very	O
compressed	O
way	O
to	O
store	O
all	O
states	O
of	O
a	O
system	O
.	O
</s>
<s>
Since	O
2016	O
CPN-AMI	B-Application
has	O
been	O
listed	O
by	O
the	O
owners	O
as	O
"	O
still	O
available	O
but	O
not	O
maintained	O
any	O
more	O
"	O
(	O
)	O
.	O
</s>
